Rivero, Gilda C. <br/><br/>
Biology :  a study guide / 
Gilda C. Rivero , Ernelea P. Cao. 
 - 2nd ed. 
 - Diliman, Quezon City :  University of the Philippines Open University,     c2005. 
 - 201 p. :  ill ;  28 cm. 
<br/><br/><label>ISBN: </label>9717671036 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology--Study and teaching (Higher}--Philippines.